Bimetallic article



Patented Mar. 12, 1935 UNITED STATES PATENT OFFICE 1.994.215 VBIMETALLIC.m'rwm Herbert w. Graham and Samuel L. Case, Pittsburgh, Pa assignors toJones & Langhlin Steel Corporation, Pittsburgh, Pa a corporation ofPennsylvania No Drawing." Application March 16, 1933, Serial No. 661,091

'1 Claim. This invention relates to bimetallic bodies and particularlyto bodies having a ferrous base and a coating of zinc.

The use of zinc in hot galvanizing to protect steel is well known. Thecharacter of the zinc coating is always a matter of concern to theimparts a finer structure. Sheets or wires coated with this zinc-sodiumalloy are superior to the ordinary galvanized coating. We have describeda present preferred embodiment of our invention. It will be understood,however, that this is by way of illustration only and that it may beotherwise embodied or practiced. within the scope of the followingclaim.

We claim:

As a new manufacture, a bimetallic body comprising a ferrous base havinga tightly'aidherent coating in direct contact with the base, the coatingbeing a binary zinc-sodium alloy, the sodium being present in amoimts upto 2%.

HERBERT w. GRAHAM. samurai L. CASE.

